Everything Everywhere, the joint venture between Orange UK and T-Mobile UK, has announced the launch of its 4G LTE network, which is dubbed EE.

EE LTE services are available starting today in four British cities: London, Bristol, Cardiff and Birmingham. EE says it will introduce LTE “in 16 cities by Christmas, covering 20 million people – a third of the population. Nationwide 4G roll out will accelerate through 2013 with 98% of UK population covered in 2014.”

Five LTE smartphones are available at launch, and, as previously reported, the HTC One XL is among them. The other four are Nokia’s first Windows Phone 8 handsets (Lumia 920 and Lumia 820), Samsung’s Galaxy S III, and Huawei’s Ascend P1.

EE will also offer the Huawei E589 Mobile Wi-Fi, and the Huawei E392 Mobile Broadband stick.

Details on pricing have not been unveiled. You can check out EE’s official website here for more details.